Meta Sudoku

As an avid Sudoku enthusiast, I often spend an entire afternoon doing Sudoku puzzles to kill time, but some Sudoku games on Steam are unsatisfactory (such as UI, operation, experience, etc.), so I start to learn programming language and developed his own sudoku game in a few weeks -- meta-sudoku Meta Sudoku is a minimalist puzzle game Your only goal is to fill in the 9 numbers 1, 2, 3, up to 9 in the spaces in a 9 X 9 square according to the numbers given by the system, so that each row, every c...